/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.protocols.ss7.cap.service.circuitSwitchedCall.primitive;

import java.io.IOException;

import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.cap.api.CAPException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentException;
import org.mobicents.protocols.ss7.cap.api.CAPParsingComponentExceptionReason;
import org.mobicents.protocols.ss7.cap.api.service.circuitSwitchedCall.primitive.InbandInfo;
import org.mobicents.protocols.ss7.cap.api.service.circuitSwitchedCall.primitive.MessageID;
import org.mobicents.protocols.ss7.cap.primitives.CAPAsnPrimitive;

/**
 * 
 * @author sergey vetyutnev
 * 
 */
public class InbandInfoImpl implements InbandInfo, CAPAsnPrimitive {

	public static final int _ID_messageID = 0;
	public static final int _ID_numberOfRepetitions = 1;
	public static final int _ID_duration = 2;
	public static final int _ID_interval = 3;

	public static final String _PrimitiveName = "InbandInfo";

	private MessageID messageID;
	private Integer numberOfRepetitions;
	private Integer duration;
	private Integer interval;

	public InbandInfoImpl() {
	}

	public InbandInfoImpl(MessageID messageID, Integer numberOfRepetitions, Integer duration, Integer interval) {
		this.messageID = messageID;
		this.numberOfRepetitions = numberOfRepetitions;
		this.duration = duration;
		this.interval = interval;
	}
	
	@Override
	public MessageID getMessageID() {
		return messageID;
	}

	@Override
	public Integer getNumberOfRepetitions() {
		return numberOfRepetitions;
	}

	@Override
	public Integer getDuration() {
		return duration;
	}

	@Override
	public Integer getInterval() {
		return interval;
	}

	@Override
	public int getTag() throws CAPException {
		return Tag.SEQUENCE;
	}

	@Override
	public int getTagClass() {
		return Tag.CLASS_UNIVERSAL;
	}

	@Override
	public boolean getIsPrimitive() {
		return false;
	}

	@Override
	public void decodeAll(AsnInputStream ansIS) throws CAPParsingComponentException {

		try {
			int length = ansIS.readLength();
			this._decode(ansIS, length);
		} catch (IOException e) {
			throw new CAPParsingComponentException("IOException when decoding " + _PrimitiveName + ": " + e.getMessage(), e,
					CAPParsingComponentExceptionReason.MistypedParameter);
		} catch (AsnException e) {
			throw new CAPParsingComponentException("AsnException when decoding " + _PrimitiveName + ": " + e.getMessage(), e,
					CAPParsingComponentExceptionReason.MistypedParameter);
		}
	}

	@Override
	public void decodeData(AsnInputStream ansIS, int length) throws CAPParsingComponentException {

		try {
			this._decode(ansIS, length);
		} catch (IOException e) {
			throw new CAPParsingComponentException("IOException when decoding " + _PrimitiveName + ": " + e.getMessage(), e,
					CAPParsingComponentExceptionReason.MistypedParameter);
		} catch (AsnException e) {
			throw new CAPParsingComponentException("AsnException when decoding " + _PrimitiveName + ": " + e.getMessage(), e,
					CAPParsingComponentExceptionReason.MistypedParameter);
		}
	}

	private void _decode(AsnInputStream ansIS, int length) throws CAPParsingComponentException, IOException, AsnException {

		this.messageID = null;
		this.numberOfRepetitions = null;
		this.duration = null;
		this.interval = null;

		AsnInputStream ais = ansIS.readSequenceStreamData(length);
		while (true) {
			if (ais.available() == 0)
				break;

			int tag = ais.readTag();

			if (ais.getTagClass() == Tag.CLASS_CONTEXT_SPECIFIC) {
				switch (tag) {
				case _ID_messageID:
					AsnInputStream ais2 = ais.readSequenceStream();
					ais2.readTag();
					this.messageID = new MessageIDImpl();
					((MessageIDImpl) this.messageID).decodeAll(ais2);
					break;
				case _ID_numberOfRepetitions:
					this.numberOfRepetitions = (int) ais.readInteger();
					break;
				case _ID_duration:
					this.duration = (int) ais.readInteger();
					break;
				case _ID_interval:
					this.interval = (int) ais.readInteger();
					break;

				default:
					ais.advanceElement();
					break;
				}
			} else {
				ais.advanceElement();
			}
		}

		if (this.messageID == null)
			throw new CAPParsingComponentException("Error while decoding " + _PrimitiveName + ": messageID is mandatory but not found",
					CAPParsingComponentExceptionReason.MistypedParameter);
	}

	@Override
	public void encodeAll(AsnOutputStream asnOs) throws CAPException {
		this.encodeAll(asnOs, this.getTagClass(), this.getTag());
	}

	@Override
	public void encodeAll(AsnOutputStream asnOs, int tagClass, int tag) throws CAPException {

		try {
			asnOs.writeTag(tagClass, this.getIsPrimitive(), tag);
			int pos = asnOs.StartContentDefiniteLength();
			this.encodeData(asnOs);
			asnOs.FinalizeContent(pos);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}

	@Override
	public void encodeData(AsnOutputStream aos) throws CAPException {

		if (this.messageID == null)
			throw new CAPException("Error while encoding " + _PrimitiveName + ": messageID must not be null");

		try {
			aos.writeTag(Tag.CLASS_CONTEXT_SPECIFIC, false, _ID_messageID);
			int pos = aos.StartContentDefiniteLength();
			((MessageIDImpl) this.messageID).encodeAll(aos);
			aos.FinalizeContent(pos);

			if (this.numberOfRepetitions != null)
				aos.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_numberOfRepetitions, this.numberOfRepetitions);
			if (this.duration != null)
				aos.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_duration, this.duration);
			if (this.interval != null)
				aos.writeInteger(Tag.CLASS_CONTEXT_SPECIFIC, _ID_interval, this.interval);

		} catch (IOException e) {
			throw new CAPException("IOException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		} catch (AsnException e) {
			throw new CAPException("AsnException when encoding " + _PrimitiveName + ": " + e.getMessage(), e);
		}
	}

	@Override
	public String toString() {

		StringBuilder sb = new StringBuilder();
		sb.append(_PrimitiveName);
		sb.append(" [");

		if (this.messageID != null) {
			sb.append("messageID=");
			sb.append(messageID.toString());
		}
		if (this.numberOfRepetitions != null) {
			sb.append(", numberOfRepetitions=");
			sb.append(numberOfRepetitions);
		}
		if (this.duration != null) {
			sb.append(", duration=");
			sb.append(duration);
		}
		if (this.interval != null) {
			sb.append(", interval=");
			sb.append(interval);
		}

		sb.append("]");

		return sb.toString();
	}
}

